Liwei Group Co., Ltd

R D Innovation

Liwei Group Co., Ltd
Quality Control

Quality Control

Full-process QC covers raw material inspection, online production sampling and finished goods batch testing for polypropylene fiber. Any non-conforming goods will be rejected before packing. We maintain complete records for lot traceability.

Workflow

End-to-End QC Pipeline

01

Raw Material Verification

Every incoming batch undergoes identity confirmation, purity screening, and CoA cross-validation before warehouse acceptance.

Pre-Production
02

In-Process Control

DCS-linked automated sampling at critical control points with real-time deviation alerts and corrective action triggers.

During Production
03

Finished Product Testing

Multi-parameter analysis covering assay, impurities, physical properties, and stability indicators per international pharmacopoeia standards.

Post-Production
04

Batch Release & Archive

Final QA review with complete documentation package, retained samples, and digital traceability record for full lifecycle tracking.

Release
Performance

Quality Dashboard

100%

Batch Release

Every batch fully compliant before release.

99.5%+

Test Accuracy

Analytical precision exceeding standards.

24/7

Real-Time Monitoring

Continuous process surveillance.

100%

Data Traceability

Complete digital batch records.

Our quality dashboard visualizes real-time batch test data of PP fiber, including tensile strength and dimensional stability. Internal quality teams monitor deviation trends continuously, adjusting upstream parameters promptly to avoid quality fluctuation.